33005140 has 24 divisors (see below), whose sum is σ = 79212672. Its totient is φ = 11316000.

The previous prime is 33005059. The next prime is 33005171. The reversal of 33005140 is 4150033.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117736 + ... + 118015.

It is an arithmetic number, because the mean of its divisors is an integer number (3300528).

Almost surely, 2^33005140 is an apocalyptic number.

It is an amenable number.

33005140 is an abundant number, since it is smaller than the sum of its proper divisors (46207532).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33005140 is a wasteful number, since it uses less digits than its factorization.

33005140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235767 (or 235765 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 33005140 is about 5745.0100086945. The cubic root of 33005140 is about 320.7700853941.

Adding to 33005140 its reverse (4150033), we get a palindrome (37155173).

The spelling of 33005140 in words is "thirty-three million, five thousand, one hundred forty".